Micromechanical Modelling and Experimentation

Lead Research Organisation: University of Oxford
Department Name: Engineering Science

Abstract

The greatest challenges that face mankind today centre on sustainability of the energy supply. It is important to develop reliable sources of energy that that have minimal impact on the environment. Also, it is important for our transport system, particularly aerospace, to make the most efficent use of energy resources. The economic challenge lies in the development of reliable and efficient generation systems based on the available sources of energy. In practice this means nuclear power, and, in the longer term, fusion. The demand this places on materials engineering research is to supply solutions for high temperature materials that would underpin improved large scale designs for systems and plant. Siimilarly, the requirement to reduce emmissions and increase efficiency in aerospace, means that material systems will need to be developed that can deliver the required performance at much higher temperatures than at present.In order to solve these problems, it will be important to develop a more in-depth understanding of material behaviour under loading and environmental conditions that are representative of those that will be experinced in practice. In this project, a fully integrated approach to modelling and experimentation will be developed, which will explore the material behaviour across a range of different scales. The new insight developed from these studies will allow us to develop improved physically based models that can be used in an industrial envionment. Strong partnerships with industry will be important in achieving this goal.In order to achieve our research objectives we must also sustain and further develop the expertise of the research base that is required to tackle these demanding scientific and technological challenges. A major objective of this grant will be to create the infrastructure for the long term sustainability of expertise that will be required to meet these challenges. This will involve the development of partnerships with other leading international academic groups.

Publications

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Armstrong D (2013) Hardening of self ion implanted tungsten and tungsten 5-wt% rhenium in Journal of Nuclear Materials

 
Description This grant led to the development of a range of experimental and modelling techniqus that underpinned future research awards, including three EPSRC Programme grants. The award led to the integration of experimental, theoretical and computational approaches to the development of micromechanical models of material behaviour for a wide range of different materials - eg Ti alloys used in the aerospace inductry, thermal barrier coatings, ferroelectric behaviour, the embrittlement of Ni based alloys and steels etc.
Exploitation Route As noted in the impact section, the research jhas been used to provide new insights in material behaviour that have been exploited in the aerospace, power generation and manufacturing industries.
Sectors Aerospace, Defence and Marine,Energy,Manufacturing, including Industrial Biotechology

 
Description The research conducted in this grant provided the fundamental understanding and computational tools that were subsequently used in industriallly funded projects withinin the power generation, aerospace and steel manufacturing industries to provide new insights into damage devlopment and residual stress states in engineering components.
First Year Of Impact 2012
Sector Aerospace, Defence and Marine,Energy,Manufacturing, including Industrial Biotechology
Impact Types Economic

 
Description Creep Constitutive Modelling of 316 stainless Steel
Amount £109,000 (GBP)
Organisation EDF Energy 
Sector Private
Country United Kingdom
Start 10/2010 
End 06/2014
 
Description Creep Constitutive Modelling of 316 stainless Steel
Amount £109,000 (GBP)
Organisation EDF Energy 
Sector Private
Country United Kingdom
Start 01/2010 
End 06/2014
 
Description DMW-Creep: Influence of Inhomogeneity on Creep of Dissimilar Metal Welds
Amount £737,970 (GBP)
Funding ID EP/K007866/1 
Organisation Engineering and Physical Sciences Research Council (EPSRC) 
Sector Public
Country United Kingdom
Start 04/2013 
End 03/2017
 
Description Development of Microsimulation model for predicting the number density of creep voids in steel welds
Amount £240,000 (GBP)
Organisation Mitsubishi Heavy Industries 
Sector Private
Country Japan
Start 02/2012 
End 06/2013
 
Description Development of Microsimulation model for predicting the number density of creep voids in steel welds
Amount £240,000 (GBP)
Organisation Mitsubishi Heavy Industries 
Sector Private
Country Japan
Start 02/2012 
End 04/2014
 
Description MAST: Modelling of advanced materials for simulation of transformative manufacturing processes
Amount £678,358 (GBP)
Funding ID EP/K028316/1 
Organisation Engineering and Physical Sciences Research Council (EPSRC) 
Sector Public
Country United Kingdom
Start 12/2014 
End 12/2017
 
Description Micro-mechanical crystal plasticity of diffusion-bonded Ti structures
Amount £70,120 (GBP)
Organisation Rolls Royce Group Plc 
Sector Private
Country United Kingdom
Start 11/2011 
End 09/2014
 
Description Micro-mechanical crystal plasticity of diffusion-bonded Ti structures
Amount £70,120 (GBP)
Organisation Rolls Royce Group Plc 
Sector Private
Country United Kingdom
Start 04/2011 
End 04/2014
 
Description Micro-mechanical modelling techniques for forming texture, non-proportionality and failure in auto materials
Amount £480,164 (GBP)
Funding ID EP/I021043/1 
Organisation Engineering and Physical Sciences Research Council (EPSRC) 
Sector Public
Country United Kingdom
Start 09/2011 
End 09/2015
 
Description Residual stresses in welds
Amount £15,000 (GBP)
Organisation POSCO - South Korea 
Sector Private
Country Korea, Republic of
Start 01/2012 
End 12/2012
 
Description Residual stresses in welds
Amount £15,000 (GBP)
Organisation POSCO - South Korea 
Sector Private
Country Korea, Republic of
Start 01/2012 
End 12/2012
 
Description Transferability of small-specimen data to large-scale component fracture assessment
Amount £524,396 (GBP)
Funding ID EP/K007815/1 
Organisation Engineering and Physical Sciences Research Council (EPSRC) 
Sector Public
Country United Kingdom
Start 04/2013 
End 03/2015